Stars Sagittarius (constellation)

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the constellation sagittarius. north left. line going right connects ζ α , β sagittarii. above line 1 sees corona australis.


α sgr (rukbat, meaning archer s knee ) despite having alpha appellation, not brightest star of constellation, having magnitude of 3.96 (not shown on main map located below map s southeastern corner, north up). instead, brightest star epsilon sagittarii (ε sgr) ( kaus australis, or southern part of bow ), @ magnitude 1.85.


sigma sagittarii (σ sgr) ( nunki ) constellation s second-brightest star @ magnitude 2.08. nunki b2v star approximately 260 light years away. nunki babylonian name of uncertain origin, thought represent sacred babylonian city of eridu on euphrates, make nunki oldest star name in use.


zeta sagittarii (ζ sgr) ( ascella ), apparent magnitude 2.61 of a2 spectra, double star 2 components have magnitudes 3.3 , 3.5.


delta sagittarii (δ sgr) ( kaus meridionalis ), k2 spectra star magnitude 2.71 , 85 light years earth.


eta sagittarii (η sgr) double star component magnitudes of 3.18 , 10, while pi sagittarii (π sgr) triple system components have magnitudes 3.7, 3.8, , 6.0.


the bayer designation beta sagittarii (beta sgr, β sagittarii, β sgr) shared 2 star systems, β¹ sagittarii, apparent magnitude 3.96, , β² sagittarii, magnitude 7.4. 2 stars separated 0.36° in sky , 378 light years earth. beta sagittarii, located @ position associated forelegs of centaur, has traditional name arkab, meaning achilles tendon.


nova sagittarii 2015 no. 2 discovered on march 15, 2015, john seach of chatsworth island, nsw, australia. lies near center of constellation. reached peak magnitude of 4.3 before steadily fading.








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